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Athermal Operation of Silicon Waveguides: Spectral, Second Order and Footprint Dependencies

Author(s)
Raghunathan, Vivek; Ye, Winnie N.; Hu, Juejun; Izuhara, Tomoyuki; Michel, Jurgen; Kimerling, Lionel C.; ... Show more Show less
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Abstract
We report the design criteria and performance of Si ring resonators for passive athermal applications in wavelength division multiplexing (WDM). The waveguide design rules address i) positivenegative thermo-optic (TO) composite structures, ii) resonant wavelength dependent geometry to achieve constant confinement factor ( Γ ), and iii) observation of small residual second order effects. We develop exact design requirements for a temperature dependent resonant wavelength shift (TDWS) of 0 pm/K and present prototype TDWS performance of 0.5pm/K. We evaluate the materials selection tradeoffs between high-index contrast (HIC) and low-index contrast (LIC) systems and show, remarkably, that FSR and footprint become comparable under the constraint of athermal design.
Date issued
2010-08
URI
http://hdl.handle.net/1721.1/58117
Department
Massachusetts Institute of Technology. Materials Processing Center; Massachusetts Institute of Technology. Department of Materials Science and Engineering; Massachusetts Institute of Technology. Microphotonics Center
Journal
Optics Express
Publisher
Optical Society of America
Citation
Vivek Raghunathan, Winnie N. Ye, Juejun Hu, Tomoyuki Izuhara, Jurgen Michel, and Lionel Kimerling, "Athermal operation of Silicon waveguides: spectral, second order and footprint dependencies," Opt. Express 18, 17631-17639 (2010)
Version: Author's final manuscript
ISSN
1094-4087
Keywords
Integrated Optics

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